The release ISO images should be available on most of the [[mirrors|mirrors]]. If the ISO is not available on a certain mirror, please try another one or download it from the DragonFly master site. Each image is in the "Live CD" format, meaning that it boots into a running and fully functional DragonFly system, which can be used for testing or system recovery tasks as well as installation

+The GUI bootable USB image also contains the DragonFly git repo in /usr/src and the PkgSrc git repo in /usr/pkgsrc. The code can be trivially checked out using these repos and even an old repo can be incrementally updated from master sites post-install.

### MD5 sums

@@ -49,7+50,7 @@ We supply a Makefile in `/usr` to track the pkgsrc tree and we supply a Git mirr

**Using deduplication** - Hammer volumes need to be upgraded to version 5 to use deduplication. The 'hammer version-upgrade &lt;filesystem&gt; &lt;version&gt;' command will perform this in-place.

-** APIC_IO** - The APIC_IO kernel option is no longer needed.

+** APIC_IO** - The APIC_IO kernel option can now also be controlled via the hw.apic_io_enable /boot/loader.conf tunable. The kernel option simply specifies the default now.

**VirtualBox, Virtual PC, and VMWare users** - Unless your virtual hard disk is 50G or larger, we recommend doing a UFS install and not the default HAMMER install. We also recommend installing from the CD ISO and not the GUI IMG. A more serious installation should use HAMMER with at least a 50G disk image and can install from the GUI IMG.